Key ring



FIG. 1 is a perspective view of a key ring showing our new design;

FIG. 2 is a front elevation thereof;

FIG. 3 is a left side elevation thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a rear elevation thereof; and

FIG. 6 is a bottom plan view. 

The ornamental design for key ring, as shown and described. 